摘要
针对木塑复合材料材料的低附加值,结合碱土铝酸盐与传统木塑制备了发光型木塑复合材料,既赋予了材料特殊性能的同时,也解决了碱土铝酸盐的耐候性差、易水解的问题。采用正交试验研究分析了材料的力学性能、发光性能,并结合扫描电子显微镜与稳态荧光光谱分析材料间内部结合与发光性能之间的关联。结果表明,发光型木塑复合材料的最佳工艺参数为:聚丙烯(PP)含量为70%、余料比例为1∶1.5、偶联剂含量为1.5%、热压时间为10 min;拉伸强度和冲击强度最大能够达到22.2 MPa和12.55 kJ/m2;发光型木塑复合材料的最佳激发区均在380~450 nm之间,完全覆盖发光盐的最佳激发波段400~440 nm,激发波段广,适用范围广;发光盐在复合材料内部可以有效发光,且在加工过程当中没有对碱土铝酸盐产生化学影响。
Aiming at improving the additional value of traditional wood plastic materials,a novel type of luminescent wood plastic composites(WPC)was prepared by a combination of alkaline earth aluminate and conventional WPC.Such a combination not only endowed the material with special properties,but also solved the problems such as poor weather resistance and the easy hydrolysis of alkaline earth aluminate.The mechanical and luminescent properties of the luminescent WPC were investigated.The relationship between the internal bonding and the luminescent properties was analyzed by scanning electron microscopy and steady-state fluorescence spectroscopy.The results indicated that the opti-mum technological parameters of the luminescent WPC were determined to be a PP content of 70 wt%,a residual mate-rial ratio of 1∶1.5,a coupling agent content of 1.5%,and a hot pressing time of 10 min.The WPC achieved the maxi-mum tensile strength of 22.2 MPa and impact strength of 12.55 kJ/m2.The luminescent WPC presented an optimal ex-citation region of 380~450 nm,which completely coverd the optimal excitation band of 400~440 nm from the lumines-cent salts.This indicates that the luminescent WPC had a wide excitation band and a wide application range.Lumines-cent salts can effectively emit light in the interior of the luminescent WPC,and there is no chemical effect on alkaline earth aluminate in the processing procedure.
机构地区
中南林业科技大学材料科学与工程学院
出处
《中国塑料》
CAS
CSCD
北大核心
2021年第5期47-53,共7页
CHINA PLASTICS
